U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!

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Examiner: Yuen, Henry C.


Primary examiner statistics: 3555 patents; average approval time: 3554 days
Assistant examiner statistics: 351 patents; average approval time: 591 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
7921661 Dehumidification system with multiple condensers and compound com...
7921842 Water-cooled barbecue system
7273045 System and method for reducing NOx emissions during transient con...
7182048 Internal combustion engine cooling system
7146958 Control apparatus for hybrid vehicle
7140330 Coolant system with thermal energy storage and method of operatin...
7137382 Optimal wide open throttle air/fuel ratio control
7131405 Rotating cylinder valve engine
7133761 Method and apparatus for controlling an internal combustion engin...
7128043 Electromechanically actuated valve control based on a vehicle ele...
7124728 Modification of lubricant properties in an operating all loss lub...
7121269 Hot-start solenoid valve
7121232 Method in an internal combustion engine and an internal combustio...
7111603 Heli-shaft
7104238 Apparatus and method for lessening the accumulation of high boili...
7107142 Automatic compliance device, automatic compliance method, automob...
7100551 Two-cycle engine with forward scavenging air positioning and sing...
7100563 Vertical engine and outboard engine system
7100562 Multicylinder internal combustion engine
7096840 Starting method and starting device of internal combustion engine...
7096844 Four-stroke engine lubricated by fuel mixture
7096847 Oil separator for internal combustion engine
7096834 Two-cycle combustion engine
7093567 Internal combustion system and method of operation
7093568 Control of autoignition timing in a HCCI engine
7093578 Oil outlet for a combustion engine and method of making same
7093569 Power unit for saddle-ride type vehicle
7089906 Multi-cylinder engine
7089891 Two-cycle combustion engine
7086357 Cylinder head with improved heat transfer and valve seat cooling
7086370 Outboard motor
7086364 Intake system for V-engine
7086386 Engine system and method accounting for engine misfire
7089103 Control system for cylinder cutoff internal combustion engine
7082909 Free-piston device with electric linear drive
7082908 Cooling structure of cylinder block
7080611 Engine-driven work machine
7080621 Air cleaner unit for combustion engine
7080609 Engine system with a thermal storage device, and engine temperatu...
7077077 Coolable annular support for intentionally cooled piston rings an...

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
4134541 Fluid separation device
4130051 Pneumatic autoschedule cabin pressure controller
4122926 Fluid operated clutch and brake
4121764 Solar heating system
4120288 Solar collector
4118178 Xerographic fusing apparatus
4117829 Fur-like photothermal converter surface
4116380 Control device for a central heating installation
4114864 Device for removal of smoke gases, dust and the like
4114521 Ventilation method and system for protecting shooters from pollut...
4114288 Bulk cure tobacco barn with improvements in construction for opti...
4111187 Modular solar radiation collector
4110068 Hot roller fuser having manually operable jam clearance mechanism
4109858 System for the utilization of waste heat from a boiler room to he...
4109773 Release bearing assemblies for vehicle clutches
4110069 Support structure for ceramic ware
4108154 Solar energy collection system
4108376 Heater unit for air-conditioner in automobile vehicle
4106399 Vehicle roof ventilator insulation covering
4106693 Automatic fireplace heating system
4106894 Apparatus for heat treating fragmented materials
4106214 Dryer attachment
4105158 Preheating and warming apparatus for use with vehicles
4103764 Control system for an automatic power transmission
4103597 Cooling vent attachment for side window of aircraft
4103825 Solar heated and cooled dwelling
4103673 Non-tracking solar energy concentrator
4103599 Method and means for improved air distribution
4103826 Heat exchanger for a freestanding heating unit
4103598 Wall structure
4102632 Modular heat recuperator
4102637 Work support for vacuum electric furnaces
4101266 Fire prevention device for the fixing stage of an electrophotogra...
4101268 Rotary kiln with planetary cooler
4099452 Smokestack-mounted airfoil
4098567 Recirculating processing oven heater
4096790 Ventilation and insulation baffle
4095585 Solar energy collector with on site storage
4095938 Arctic vehicle battery heater
4094232 Clean air zone
 
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